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table.unpack = table.unpack or unpack -- 5.1 compatibility
local has_words_before = function()
local line, col = table.unpack(vim.api.nvim_win_get_cursor(0))
return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
end
local luasnip = require("luasnip")
local cmp = require("cmp")
require("luasnip/loaders/from_vscode").lazy_load()
vim.o.completeopt = 'menuone,noselect'
cmp.setup {
snippet = {
expand = function(args)
require('luasnip').lsp_expand(args.body)
end,
},
mapping = cmp.mapping.preset.insert({
['<CR>'] = cmp.mapping.confirm({ select = true }),
['<C-n>'] = cmp.mapping.select_next_item(),
['<C-p>'] = cmp.mapping.select_prev_item(),
['<C-f>'] = cmp.mapping.scroll_docs(4),
['<C-d>'] = cmp.mapping.scroll_docs(-4),
['<C-e>'] = cmp.mapping.close(),
["<Tab>"] = cmp.mapping(function(fallback)
if cmp.visible() then
cmp.select_next_item()
elseif luasnip.expand_or_jumpable() then
luasnip.expand_or_jump()
elseif has_words_before() then
cmp.complete()
else
fallback()
end
end, { "i", "s" }),
["<S-Tab>"] = cmp.mapping(function(fallback)
if cmp.visible() then
cmp.select_prev_item()
elseif luasnip.jumpable(-1) then
luasnip.jump(-1)
else
fallback()
end
end, { "i", "s" }),
}),
sources = {
{ name = 'nvim_lsp' },
{ name = 'luasnip' },
},
}
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